Fig. 10
Analysis of Prolobites delphinus (Sandberger & Sandberger 1851) within the seven successive horizons of the Prolobites delphinus Zone on the Enkeberg, a Box-and-whiskers diagram showing the eccentricity rate. b Scatter plot of 125 specimens with respect to their conch width index (ww/dm) and their eccentricity rate. c Scatter plot of 189 specimens (stored in the collection of the Museum für Naturkunde, Berlin) from the Enkeberg section with respect to their conch diameter and their eccentricity rate